 @@ -1,513 +1,513 @@
-/*	$NetBSD: in.h,v 1.114 2021/02/03 18:13:13 roy Exp $	*/
+/*	$NetBSD: in.h,v 1.115 2023/06/16 03:02:30 rin Exp $	*/
 /*
  * Copyright (c) 1982, 1986, 1990, 1993
  *	The Regents of the University of California.  All rights reserved.
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  * 3. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
+ *
  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
+ *
  *	@(#)in.h	8.3 (Berkeley) 1/3/94
  */
 /*
  * Constants and structures defined by the internet system,
  * Per RFC 790, September 1981, and numerous additions.
  */
 #ifndef _NETINET_IN_H_
 #define	_NETINET_IN_H_
 #include <sys/featuretest.h>
 #include <machine/int_types.h>
 #ifndef	_BSD_UINT8_T_
 typedef __uint8_t	uint8_t;
 #define	_BSD_UINT8_T_
 #endif
 #ifndef	_BSD_UINT32_T_
 typedef __uint32_t	uint32_t;
 #define	_BSD_UINT32_T_
 #endif
 #include <sys/ansi.h>
 #ifndef in_addr_t
 typedef __in_addr_t	in_addr_t;
 #define	in_addr_t	__in_addr_t
 #endif
 #ifndef in_port_t
 typedef __in_port_t	in_port_t;
 #define	in_port_t	__in_port_t
 #endif
 #ifndef sa_family_t
 typedef __sa_family_t	sa_family_t;
 #define	sa_family_t	__sa_family_t
 #endif
 /*
  * Protocols
  */
 #define	IPPROTO_IP		0		/* dummy for IP */
 #define	IPPROTO_HOPOPTS		0		/* IP6 hop-by-hop options */
 #define	IPPROTO_ICMP		1		/* control message protocol */
 #define	IPPROTO_IGMP		2		/* group mgmt protocol */
 #define	IPPROTO_GGP		3		/* gateway^2 (deprecated) */
 #define	IPPROTO_IPV4		4 		/* IP header */
 #define	IPPROTO_IPIP		4		/* IP inside IP */
 #define	IPPROTO_TCP		6		/* tcp */
 #define	IPPROTO_EGP		8		/* exterior gateway protocol */
 #define	IPPROTO_PUP		12		/* pup */
 #define	IPPROTO_UDP		17		/* user datagram protocol */
 #define	IPPROTO_IDP		22		/* xns idp */
 #define	IPPROTO_TP		29 		/* tp-4 w/ class negotiation */
 #define	IPPROTO_DCCP		33		/* DCCP */
 #define	IPPROTO_IPV6		41		/* IP6 header */
 #define	IPPROTO_ROUTING		43		/* IP6 routing header */
 #define	IPPROTO_FRAGMENT	44		/* IP6 fragmentation header */
 #define	IPPROTO_RSVP		46		/* resource reservation */
 #define	IPPROTO_GRE		47		/* GRE encaps RFC 1701 */
 #define	IPPROTO_ESP		50 		/* encap. security payload */
 #define	IPPROTO_AH		51 		/* authentication header */
 #define	IPPROTO_MOBILE		55		/* IP Mobility RFC 2004 */
 #define	IPPROTO_IPV6_ICMP	58		/* IPv6 ICMP */
 #define	IPPROTO_ICMPV6		58		/* ICMP6 */
 #define	IPPROTO_NONE		59		/* IP6 no next header */
 #define	IPPROTO_DSTOPTS		60		/* IP6 destination option */
 #define	IPPROTO_EON		80		/* ISO cnlp */
 #define	IPPROTO_ETHERIP		97		/* Ethernet-in-IP */
 #define	IPPROTO_ENCAP		98		/* encapsulation header */
 #define	IPPROTO_PIM		103		/* Protocol indep. multicast */
 #define	IPPROTO_IPCOMP		108		/* IP Payload Comp. Protocol */
 #define	IPPROTO_VRRP		112		/* VRRP RFC 2338 */
 #define	IPPROTO_CARP		112		/* Common Address Resolution Protocol */
 #define	IPPROTO_L2TP		115		/* L2TPv3 */
 #define	IPPROTO_SCTP		132		/* SCTP */
-#define IPPROTO_PFSYNC      240     /* PFSYNC */
+#define IPPROTO_PFSYNC		240		/* PFSYNC */
 #define	IPPROTO_RAW		255		/* raw IP packet */
 #define	IPPROTO_MAX		256
 /* last return value of *_input(), meaning "all job for this pkt is done".  */
 #define	IPPROTO_DONE		257
 /* sysctl placeholder for (FAST_)IPSEC */
 #define CTL_IPPROTO_IPSEC	258
 /*
  * Local port number conventions:
+ *
  * Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root),
  * unless a kernel is compiled with IPNOPRIVPORTS defined.
+ *
  * When a user does a bind(2) or connect(2) with a port number of zero,
  * a non-conflicting local port address is chosen.
+ *
  * The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although
  * that is settable by sysctl(3); net.inet.ip.anonportmin and
  * net.inet.ip.anonportmax respectively.
+ *
  * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
  * default assignment range.
+ *
  * The value IP_PORTRANGE_DEFAULT causes the default behavior.
+ *
  * The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT,
  * and exists only for FreeBSD compatibility purposes.
+ *
  * The value IP_PORTRANGE_LOW changes the range to the "low" are
  * that is (by convention) restricted to privileged processes.
  * This convention is based on "vouchsafe" principles only.
  * It is only secure if you trust the remote host to restrict these ports.
  * The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX.
  */
 #define	IPPORT_RESERVED		1024
 #define	IPPORT_ANONMIN		49152
 #define	IPPORT_ANONMAX		65535
 #define	IPPORT_RESERVEDMIN	600
 #define	IPPORT_RESERVEDMAX	(IPPORT_RESERVED-1)
 /*
  * Internet address (a structure for historical reasons)
  */
 struct in_addr {
 	in_addr_t s_addr;
 };
 #ifdef __CTASSERT
 __CTASSERT(sizeof(struct in_addr) == 4);
 #endif
 /*
  * Definitions of bits in internet address integers.
  * On subnets, the decomposition of addresses to host and net parts
  * is done according to subnet mask, not the masks here.
+ *
  * By byte-swapping the constants, we avoid ever having to byte-swap IP
  * addresses inside the kernel.  Unfortunately, user-level programs rely
  * on these macros not doing byte-swapping.
  */
 #ifdef _KERNEL
 #define	__IPADDR(x)	((uint32_t) htonl((uint32_t)(x)))
 #else
 #define	__IPADDR(x)	((uint32_t)(x))
 #endif
 #define	IN_CLASSA(i)		(((uint32_t)(i) & __IPADDR(0x80000000)) == \
 				 __IPADDR(0x00000000))
 #define	IN_CLASSA_NET		__IPADDR(0xff000000)
 #define	IN_CLASSA_NSHIFT	24
 #define	IN_CLASSA_HOST		__IPADDR(0x00ffffff)
 #define	IN_CLASSA_MAX		128
 #define	IN_CLASSB(i)		(((uint32_t)(i) & __IPADDR(0xc0000000)) == \
 				 __IPADDR(0x80000000))
 #define	IN_CLASSB_NET		__IPADDR(0xffff0000)
 #define	IN_CLASSB_NSHIFT	16
 #define	IN_CLASSB_HOST		__IPADDR(0x0000ffff)
 #define	IN_CLASSB_MAX		65536
 #define	IN_CLASSC(i)		(((uint32_t)(i) & __IPADDR(0xe0000000)) == \
 				 __IPADDR(0xc0000000))
 #define	IN_CLASSC_NET		__IPADDR(0xffffff00)
 #define	IN_CLASSC_NSHIFT	8
 #define	IN_CLASSC_HOST		__IPADDR(0x000000ff)
 #define	IN_CLASSD(i)		(((uint32_t)(i) & __IPADDR(0xf0000000)) == \
 				 __IPADDR(0xe0000000))
 /* These ones aren't really net and host fields, but routing needn't know. */
 #define	IN_CLASSD_NET		__IPADDR(0xf0000000)
 #define	IN_CLASSD_NSHIFT	28
 #define	IN_CLASSD_HOST		__IPADDR(0x0fffffff)
 #define	IN_MULTICAST(i)		IN_CLASSD(i)
 #define	IN_EXPERIMENTAL(i)	(((uint32_t)(i) & __IPADDR(0xf0000000)) == \
 				 __IPADDR(0xf0000000))
 #define	IN_BADCLASS(i)		(((uint32_t)(i) & __IPADDR(0xf0000000)) == \
 				 __IPADDR(0xf0000000))
 #define IN_LINKLOCAL(i)	(((uint32_t)(i) & __IPADDR(0xffff0000)) == \
 			 __IPADDR(0xa9fe0000))
 #define	IN_PRIVATE(i)	((((uint32_t)(i) & __IPADDR(0xff000000)) ==	\
 			  __IPADDR(0x0a000000))	||			\
 			 (((uint32_t)(i) & __IPADDR(0xfff00000)) ==	\
 			  __IPADDR(0xac100000))	||			\
 			 (((uint32_t)(i) & __IPADDR(0xffff0000)) ==	\
 			  __IPADDR(0xc0a80000)))
 #define	IN_LOCAL_GROUP(i)	(((uint32_t)(i) & __IPADDR(0xffffff00)) == \
 				 __IPADDR(0xe0000000))
 #define	IN_ANY_LOCAL(i)		(IN_LINKLOCAL(i) || IN_LOCAL_GROUP(i))
 #define	INADDR_ANY		__IPADDR(0x00000000)
 #define	INADDR_LOOPBACK		__IPADDR(0x7f000001)
 #define	INADDR_BROADCAST	__IPADDR(0xffffffff)	/* must be masked */
 #define	INADDR_NONE		__IPADDR(0xffffffff)	/* -1 return */
 #define	INADDR_UNSPEC_GROUP	__IPADDR(0xe0000000)	/* 224.0.0.0 */
 #define	INADDR_ALLHOSTS_GROUP	__IPADDR(0xe0000001)	/* 224.0.0.1 */
 #define	INADDR_ALLRTRS_GROUP	__IPADDR(0xe0000002)	/* 224.0.0.2 */
 #define	INADDR_CARP_GROUP	__IPADDR(0xe0000012)	/* 224.0.0.18 */
 #define	INADDR_MAX_LOCAL_GROUP	__IPADDR(0xe00000ff)	/* 224.0.0.255 */
 #define	IN_LOOPBACKNET		127			/* official! */
 #define	IN_RFC3021_MASK		__IPADDR(0xfffffffe)
 /*
  * Socket address, internet style.
  */
 struct sockaddr_in {
 	uint8_t		sin_len;
 	sa_family_t	sin_family;
 	in_port_t	sin_port;
 	struct in_addr	sin_addr;
 	__int8_t	sin_zero[8];
 };
 #define	INET_ADDRSTRLEN                 16
 /*
  * Structure used to describe IP options.
  * Used to store options internally, to pass them to a process,
  * or to restore options retrieved earlier.
  * The ip_dst is used for the first-hop gateway when using a source route
  * (this gets put into the header proper).
  */
 struct ip_opts {
 	struct in_addr	ip_dst;		/* first hop, 0 w/o src rt */
 #if defined(__cplusplus)
 	__int8_t	Ip_opts[40];	/* actually variable in size */
 #else
 	__int8_t	ip_opts[40];	/* actually variable in size */
 #endif
 };
 /*
  * Options for use with [gs]etsockopt at the IP level.
  * First word of comment is data type; bool is stored in int.
  */
 #define	IP_OPTIONS		1    /* buf/ip_opts; set/get IP options */
 #define	IP_HDRINCL		2    /* int; header is included with data */
 #define	IP_TOS			3    /* int; IP type of service and preced. */
 #define	IP_TTL			4    /* int; IP time to live */
 #define	IP_RECVOPTS		5    /* bool; receive all IP opts w/dgram */
 #define	IP_RECVRETOPTS		6    /* bool; receive IP opts for response */
 #define	IP_RECVDSTADDR		7    /* bool; receive IP dst addr w/dgram */
 #define	IP_RETOPTS		8    /* ip_opts; set/get IP options */
 #define	IP_MULTICAST_IF		9    /* in_addr; set/get IP multicast i/f  */
 #define	IP_MULTICAST_TTL	10   /* u_char; set/get IP multicast ttl */
 #define	IP_MULTICAST_LOOP	11   /* u_char; set/get IP multicast loopback */
 /* The add and drop membership option numbers need to match with the v6 ones */
 #define	IP_ADD_MEMBERSHIP	12   /* ip_mreq; add an IP group membership */
 #define	IP_DROP_MEMBERSHIP	13   /* ip_mreq; drop an IP group membership */
 #define	IP_PORTALGO		18   /* int; port selection algo (rfc6056) */
 #define	IP_PORTRANGE		19   /* int; range to use for ephemeral port */
 #define	IP_RECVIF		20   /* bool; receive reception if w/dgram */
 #define	IP_ERRORMTU		21   /* int; get MTU of last xmit = EMSGSIZE */
 #define	IP_IPSEC_POLICY		22   /* struct; get/set security policy */
 #define	IP_RECVTTL		23   /* bool; receive IP TTL w/dgram */
 #define	IP_MINTTL		24   /* minimum TTL for packet or drop */
 #define	IP_PKTINFO		25   /* struct; set default src if/addr */
 #define	IP_RECVPKTINFO		26   /* int; receive dst if/addr w/dgram */
 #define	IP_BINDANY		27   /* bool: allow bind to any address */
 #define IP_SENDSRCADDR IP_RECVDSTADDR /* FreeBSD compatibility */
 /*
  * Information sent in the control message of a datagram socket for
  * IP_PKTINFO and IP_RECVPKTINFO.
  */
 struct in_pktinfo {
 	struct in_addr	ipi_addr;	/* src/dst address */
 	unsigned int ipi_ifindex;	/* interface index */
 };
 #define ipi_spec_dst ipi_addr	/* Solaris/Linux compatibility */
 /*
  * Defaults and limits for options
  */
 #define	IP_DEFAULT_MULTICAST_TTL  1	/* normally limit m'casts to 1 hop  */
 #define	IP_DEFAULT_MULTICAST_LOOP 1	/* normally hear sends if a member  */
 #define	IP_MAX_MEMBERSHIPS	20	/* per socket; must fit in one mbuf */
 /*
  * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
  */
 struct ip_mreq {
 	struct	in_addr imr_multiaddr;	/* IP multicast address of group */
 	struct	in_addr imr_interface;	/* local IP address of interface */
 };
 /*
  * Argument for IP_PORTRANGE:
  * - which range to search when port is unspecified at bind() or connect()
  */
 #define	IP_PORTRANGE_DEFAULT	0	/* default range */
 #define	IP_PORTRANGE_HIGH	1	/* same as DEFAULT (FreeBSD compat) */
 #define	IP_PORTRANGE_LOW	2	/* use privileged range */
 #if defined(_NETBSD_SOURCE)
 /*
  * Definitions for inet sysctl operations.
+ *
  * Third level is protocol number.
  * Fourth level is desired variable within that protocol.
  */
 /*
  * Names for IP sysctl objects
  */
 #define	IPCTL_FORWARDING	1	/* act as router */
 #define	IPCTL_SENDREDIRECTS	2	/* may send redirects when forwarding */
 #define	IPCTL_DEFTTL		3	/* default TTL */
 /* IPCTL_DEFMTU=4, never implemented */
 #define	IPCTL_FORWSRCRT		5	/* forward source-routed packets */
 #define	IPCTL_DIRECTEDBCAST	6	/* default broadcast behavior */
 #define	IPCTL_ALLOWSRCRT	7	/* allow/drop all source-routed pkts */
 #define	IPCTL_SUBNETSARELOCAL	8	/* treat subnets as local addresses */
 #define	IPCTL_MTUDISC		9	/* allow path MTU discovery */
-#define	IPCTL_ANONPORTMIN      10	/* minimum ephemeral port */
+#define	IPCTL_ANONPORTMIN	10	/* minimum ephemeral port */
-#define	IPCTL_ANONPORTMAX      11	/* maximum ephemeral port */
+#define	IPCTL_ANONPORTMAX	11	/* maximum ephemeral port */
-#define	IPCTL_MTUDISCTIMEOUT   12	/* allow path MTU discovery */
+#define	IPCTL_MTUDISCTIMEOUT	12	/* allow path MTU discovery */
-#define	IPCTL_MAXFLOWS         13	/* maximum ip flows allowed */
+#define	IPCTL_MAXFLOWS		13	/* maximum ip flows allowed */
-#define	IPCTL_HOSTZEROBROADCAST 14	/* is host zero a broadcast addr? */
+#define	IPCTL_HOSTZEROBROADCAST	14	/* is host zero a broadcast addr? */
-#define	IPCTL_GIF_TTL 	       15	/* default TTL for gif encap packet */
+#define	IPCTL_GIF_TTL		15	/* default TTL for gif encap packet */
-#define	IPCTL_LOWPORTMIN       16	/* minimum reserved port */
+#define	IPCTL_LOWPORTMIN	16	/* minimum reserved port */
-#define	IPCTL_LOWPORTMAX       17	/* maximum reserved port */
+#define	IPCTL_LOWPORTMAX	17	/* maximum reserved port */
-#define	IPCTL_MAXFRAGPACKETS   18	/* max packets reassembly queue */
+#define	IPCTL_MAXFRAGPACKETS	18	/* max packets reassembly queue */
-#define	IPCTL_GRE_TTL          19	/* default TTL for gre encap packet */
+#define	IPCTL_GRE_TTL		19	/* default TTL for gre encap packet */
-#define	IPCTL_CHECKINTERFACE   20	/* drop pkts in from 'wrong' iface */
+#define	IPCTL_CHECKINTERFACE	20	/* drop pkts in from 'wrong' iface */
-#define	IPCTL_IFQ	       21	/* IP packet input queue */
+#define	IPCTL_IFQ		21	/* IP packet input queue */
-#define	IPCTL_RANDOMID	       22	/* use random IP ids (if configured) */
+#define	IPCTL_RANDOMID		22	/* use random IP ids (if configured) */
-#define	IPCTL_LOOPBACKCKSUM    23	/* do IP checksum on loopback */
+#define	IPCTL_LOOPBACKCKSUM	23	/* do IP checksum on loopback */
 #define	IPCTL_STATS		24	/* IP statistics */
-#define	IPCTL_DAD_COUNT        25	/* DAD packets to send */
+#define	IPCTL_DAD_COUNT		25	/* DAD packets to send */
 #endif /* _NETBSD_SOURCE */
 /* INET6 stuff */
 #define	__KAME_NETINET_IN_H_INCLUDED_
 #include <netinet6/in6.h>
 #undef __KAME_NETINET_IN_H_INCLUDED_
 #ifdef _KERNEL
 #include <sys/psref.h>
 /*
  * in_cksum_phdr:
+ *
  *	Compute significant parts of the IPv4 checksum pseudo-header
  *	for use in a delayed TCP/UDP checksum calculation.
+ *
  *	Args:
+ *
  *		src		Source IP address
  *		dst		Destination IP address
  *		lenproto	htons(proto-hdr-len + proto-number)
  */
 static __inline u_int16_t __unused
 in_cksum_phdr(u_int32_t src, u_int32_t dst, u_int32_t lenproto)
+{
 	u_int32_t sum;
 	sum = lenproto +
 	      (u_int16_t)(src >> 16) +
 	      (u_int16_t)(src /*& 0xffff*/) +
 	      (u_int16_t)(dst >> 16) +
 	      (u_int16_t)(dst /*& 0xffff*/);
 	sum = (u_int16_t)(sum >> 16) + (u_int16_t)(sum /*& 0xffff*/);
 	if (sum > 0xffff)
 		sum -= 0xffff;
 	return (sum);
+}
 /*
  * in_cksum_addword:
+ *
  *	Add the two 16-bit network-order values, carry, and return.
  */
 static __inline u_int16_t __unused
 in_cksum_addword(u_int16_t a, u_int16_t b)
+{
 	u_int32_t sum = a + b;
 	if (sum > 0xffff)
 		sum -= 0xffff;
 	return (sum);
+}
 extern	struct in_addr zeroin_addr;
 extern	u_char	ip_protox[];
 extern const struct sockaddr_in in_any;
 int	in_broadcast(struct in_addr, struct ifnet *);
 int	in_direct(struct in_addr, struct ifnet *);
 int	in_canforward(struct in_addr);
 int	cpu_in_cksum(struct mbuf *, int, int, uint32_t);
 int	in_cksum(struct mbuf *, int);
 int	in4_cksum(struct mbuf *, u_int8_t, int, int);
 int	in_localaddr(struct in_addr);
 void	in_socktrim(struct sockaddr_in *);
 void	in_len2mask(struct in_addr *, u_int);
 void	in_if_link_up(struct ifnet *);
 void	in_if_link_down(struct ifnet *);
 void	in_if_up(struct ifnet *);
 void	in_if_down(struct ifnet *);
 void	in_if_link_state_change(struct ifnet *, int);
 struct route;
 struct ip_moptions;
 struct in_ifaddr *in_selectsrc(struct sockaddr_in *,
 	struct route *, int, struct ip_moptions *, int *, struct psref *);
 struct ip;
 int in_tunnel_validate(const struct ip *, struct in_addr, struct in_addr);
 #define	in_hosteq(s,t)	((s).s_addr == (t).s_addr)
 #define	in_nullhost(x)	((x).s_addr == INADDR_ANY)
 #define	satosin(sa)	((struct sockaddr_in *)(sa))
 #define	satocsin(sa)	((const struct sockaddr_in *)(sa))
 #define	sintosa(sin)	((struct sockaddr *)(sin))
 #define	sintocsa(sin)	((const struct sockaddr *)(sin))
 #define	ifatoia(ifa)	((struct in_ifaddr *)(ifa))
 int sockaddr_in_cmp(const struct sockaddr *, const struct sockaddr *);
 const void *sockaddr_in_const_addr(const struct sockaddr *, socklen_t *);
 void *sockaddr_in_addr(struct sockaddr *, socklen_t *);
 static __inline void
 sockaddr_in_init1(struct sockaddr_in *sin, const struct in_addr *addr,
     in_port_t port)
+{
 	sin->sin_port = port;
 	sin->sin_addr = *addr;
 	memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
+}
 static __inline void
 sockaddr_in_init(struct sockaddr_in *sin, const struct in_addr *addr,
     in_port_t port)
+{
 	sin->sin_family = AF_INET;
 	sin->sin_len = sizeof(*sin);
 	sockaddr_in_init1(sin, addr, port);
+}
 static __inline struct sockaddr *
 sockaddr_in_alloc(const struct in_addr *addr, in_port_t port, int flags)
+{
 	struct sockaddr *sa;
 	sa = sockaddr_alloc(AF_INET, sizeof(struct sockaddr_in), flags);
 	if (sa == NULL)
 		return NULL;
 	sockaddr_in_init1(satosin(sa), addr, port);
 	return sa;
+}
 #endif /* _KERNEL */
 #if defined(_KERNEL) || defined(_TEST)
 int	in_print(char *, size_t, const struct in_addr *);
 #define IN_PRINT(b, a)	(in_print((b), sizeof(b), a), (b))
 int	sin_print(char *, size_t, const void *);
 #endif
 #endif /* !_NETINET_IN_H_ */